/*
 * Copyright 2017 - 2025 the original author or authors.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see [https://www.gnu.org/licenses/]
 */

package infra.core.conversion.support;

import org.jspecify.annotations.Nullable;

import java.util.regex.Pattern;

import infra.core.conversion.Converter;

/**
 * Converts from a String to a {@link java.util.regex.Pattern}.
 *
 * @author Valery Yatsynovich
 * @author Stephane Nicoll
 * @author <a href="https://github.com/TAKETODAY">Harry Yang</a>
 * @since 4.0
 */
final class StringToPatternConverter implements Converter<String, Pattern> {

  @Nullable
  @Override
  public Pattern convert(String source) {
    if (source.isEmpty()) {
      return null;
    }
    return Pattern.compile(source);
  }

}
